Carbstop BBS-25 Brake Pads have been develop to work with carbon rims wheels. This hybrid pad works in all conditions from dry to wet having been specifcally develop with this in mind. Although officially BBB stands for Bikeparts for Bikers by Bikers we also believe that we provide the following : Bold Innovation - Brilliant Designs - Beyond Expectation. BBB is All About Cycling. High performance brake pads for carbon fibre rims. Special compound for high brake power and extra durability compared with ordinary pads. Prevents overheating, more brake power under extreme conditions. Leaves no brake coal dust on the braking surface. Compatible with: BBB BBS-11T CrossStop, BBS-22 TechStop, BB2-24HP Airco Road, Shimano 105, Ultegra and Dura-Ace.